Product size: The product has an outer diameter of 27.45mm, an inner diameter of 10mm, and a thickness of 1.5mm. Manual measurements, please allow slight errors. Applicability: This washer is located inside the device that selects the direction of water flow (hose or nozzle), and is suitable for old-style bathtub shower mixer taps. Easy to install: Direct replacement without adjustment, perfect compatibility, and high reliability. Product material: This product is specially designed and made of rubber material, with a high service life and not easy to damage. Product list: Product include a total of 5pcs Washer, which can completely meet your daily use needs and replacement., Manufacturer: EMSea